```typescript index.ts
// Create an access token
const createAccessTokenResponse = oyster.authentication.createAccessToken({
    client_id: "1234ABCD"
    client_secret: "1234ABCD"
    grant_type: "authorization_code"
    code: "1234ABCD"
    redirect_uri: "https://example.com/inbound"
    refresh_token: "https://example.com/inbound"
})
```